Historical Data

Cboe Streaming Market Indices (CSMi) consists of over 200 index values offered by Standard and Poor’s and Cboe and many more firms. This offering provides a summary of the opening, highest, lowest, and closing index value disseminated for each index on a given day. For most indexes which update every 15 seconds during trading hours, the summary will cover the whole day, for indexes which update once per day, the Open, High, Low, and Close will be equal.
Click here to view the current indexes on the CSMi feed.

The equity quotes end-of-day files, recap the day’s trading activity in the underlying security. Open, high, low, close, trading volume and VWAP are included with two NBBO snapshots, one at 15:45 and another at the market close (market closing time is product dependent). Effective February 5, 2020 on half trading days, the value in the "1545" column will be taken at 12:45 pm ET and the column name of 1545 will be unchanged.

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